The Checkline DTSM - Digital Torque Measuring Screwdriver is a torque measuring manual screwdriver designed for lab and production use. The Large Color OLED displays bi-directional torque in real-time or peak modes. The driver has an accuracy of ±1% of the indicated measurement from 10%-100% of range and offers programmable setpoints that provide both an audible beep and green/red LED signals for uniform tightening or GO/NO GO testing. Use the > 2000+ internal memory for data recall and out via USB or Bluetooth (optional).